MODULE t1;
IMPORT Out;
BEGIN
Out.String(23);

END t1.

(* 
org.antlr.runtime.tree.RewriteEmptyStreamException: rule declarationSequence
	at org.antlr.runtime.tree.RewriteRuleElementStream._next(RewriteRuleElementStream.java:157)
	at org.antlr.runtime.tree.RewriteRuleElementStream.nextTree(RewriteRuleElementStream.java:144)
	at ru.msu.cmc.sp.oberon2.InterParser.obmodule(InterParser.java:283)
	at ru.msu.cmc.sp.oberon2.Oberon2.analysis(Oberon2.java:16)
	at ru.msu.cmc.sp.oberon2.Oberon2.main(Oberon2.java:47)
 *)